Listed cultivator.



' C W. MIC HA ELJ LISTED CULTIVATOR.

' APPLICATION men JUNE26. 191s.

' Patented Apr. 1,1919.

4 SHEETS-SHEET 1.

0. W. MICHAEL.

LISTED CULTIVATOR.

APPLICATION FILED JUNE 26. 1916.

Patented Apr. 1 ,1919. 4 SHEETSSHEET Z J. a xw m m T wzmwam M$M 1n: Noxms PETsus ro-Lnwa. WASNHJG C. W. MICHAEL.

LISTED CULTIVATOR.

APPLICATlON FILED )UNE 26.1916.

1,298,760., Patented Apr. 1,1919.

4 SHEETSSHEET 3- W56 v i vzzb rm: mamas PETERS ca. FNDTOJJTHO vavmrmrohl, B1 c.

' C. W. MICHAEL.

LISTED CULTIYATOR. APPLICATION FILED JUNE 26. I9I6.

1,298,760. Patented Apr. 1,1919.

4 SHEETSSHEET 4.

y ZZZ -4 9 UTED STATS ATENT OFFICE.

CLEMENT W. MICHAEL, OF 'BACINE, WISCONSIN, ASSIGNOR TO J. I. CASE PLOW WORKS,

OF RACINE, WISCONSIN, A CORPORATION OF WISCONSIN.

. LISTED CULTIVATOR.

Specification of Letters Patent.

Patented Apr. 1, 1919.

Application filed June 26, 1916. 7 Serial No. 106,045.

To all whom it may concern: 1

Be it known that I, CLEMENT W. MICHAEL, a citizen of the United States, residing at Racine, in the county of Racine and State of Wisconsin, have invented. certain new and useful Improvements in Listed Cultivators, of which the following is a specification.

Machines of the'class to which-my invention relates consist of two substantially complete cultivator members, each provided with its supporting wheels, ground working tools and means for attaching draft animals, the two members being connected by a transverse member so as to move side by side a substantially uniform distance apart, the transverse member carrying a seat for the operator. The main feature with which my present invention is concerned is the means for connecting the two members together. In apparatus'heretofore constructed so far as known to me, the two members havebeen connected by a rigidly attached cross-piece, with the result that when for any reason either of the membersis tilted with respect to the other, a strain is put upon the machine which distorts the same, or even breaks the transverse member or one or other of the cultivator units. One

' of the objects of my mvention isto avoid injury to' the while it is sufficiently rigid .to normally hold the members in proper relation, it will give under unusual strain and thus prevent breakage and the like. The other details of improvement will appear from the detailed description. It is to be understood, however, that the specific disclosure is for the purpose of exemplification only, and that the scope of the invention is defined in the following claims in which I have endeavored to distinguish it from the prior art without, however, relinquishing or abandoning any portion or feature thereof.

In the drawings Figure 1 is a side elevation of the preferred form of cultivator embodying my invention, shortened up by breaking away for convenience of illustration; Fig. 2 is a plan view on a reduced scale; Fig. 3 a plan of a machine on the same scale as Fig. 1; Fig. 4. is a vertical section on the line H of Fig. 2 but on the scale of Figs. 1 and 3; Fig. 5

and Fig. 8 a rear elevation of a detail.

spaced from the pole at the sides and pivpart only of the referred to above,

is a vertical section of a detail on the line 5-5 of Fig. 3; Fig. 6 a vertical section on the line 6 6 of Fig. 3; Fig. 7 a vertical section of a detail on line 77 of Fig.3;

In the several views each part is represented by the same reference character throughout.

In the plan vlew of Fig.2, the. cultivator units are indicated by the letters A, A the transverse connection by letter B; C, (dotted lines) .is the seat, and D, D, the poles of the respective cultivators. Since the two cultivator units are identical, it will be sufficient to describe one of them, it being understood that the description is equally applicable to both. To the. rear end; of the pole of each element is bolted a square col lar d, which, as" seen in Fig. 6 is slightly oted upon the bolt 30 to permit some slight relative movement. Upon opposite sides of the collar are bolted the front ends of a pair of'straps 9 which, as shown more particularly in Fig. 3, extend for a short distance parallel to the pole and then diverge 'for a short distanceas at 9 and at 9 again become parallel to each other and to the direction of the pole. The brace or strut e is bolted at'its ends 6' and e to the diverging sections of the straps ,9, thus maintaining them in proper relative position, and a guide 6 secured to said. brace at its ends is engaged by a hooke bolted to thejrear end of'the pole, thus allowing a limited lateral play of said'pole while maintainingits general position relative to said straps. The frame comprising the straps 9 is supported upon ground wheels 10, which are attached to atransverse shaft 11 by means of stout metal straps 12 which at their upper ends 13 are bent about said rectangular shaft 11 to form clamping collars thereon, and at their lower ends are bent into loops 14; to

receive and formbearingsforthe journals 100 of the wheels 10. The shaft 11 is secured to the parallel rear ends ofthe straps 9 by means of brackets 15 which, are clamped to said shaft by bolts 16 and pivoted to the straps 9 by bolts 18 are also secured to the shaft 11, the beams 19 thereof being pivoted upon thebolts 16 and laterally adjustable by means of bolts 20 extending through arcuate slots 21 in the rearwardly extending 11 17. The cultivator disks 10 plates 22, formed integral with the brackets '15.; It will thus be seen that the wheels and disks are movablel with the shaft llabout the pivots 17, and means is provided for adjusting them in this respect to adjust the extent of penetration of the cultivator disks.

Inorder to adjust the shaft 11 and the elements carried thereby to regulate the depth of penetration of the cultivator disks,

a double yoke lever 23 is pivoted on bolts- 24: by which the forward ends of the straps *9 are secured to the collar (Z as heretofore described. 'endsof the double lever are perforated and See Figs. 1 and 6.) The lower receive a U-shaped rod 25,.the side members of which extend rearwardly, the ends being bent at right angles as at 26, and pivoted to the strapson which the wheels are journ'aled.

The lever is adjusted and maintained in adjustedposition by a hand lever 27 mounted upon the frame in the following manner A bracket 28 provided with an upstanding fin 1. 29 is secured atits front end by a bolt 30 to the collard and at its. rear end is extended downwardlyand adjustably secured to the brace e. (See Figs. 7 and 8.) To the fin 29 is bolted a bracket 28 the uppe'rportion ofwhich, as shown in Figs. 3 and 8, is inclined toward the center of the machine. A rack casting 31 is mounted on the bracket 28 'in an inclined position and has a bridge 27* cast integral with and above the main body of the casting. The hand lever 27 extends through the space between said bridge and .thebody of the rack plate, and is pivoted thereto by the bolt or pivot 48. The

curved edge of the casting is formed with an arcuate rack 28 with which a pawl 28 of.

the usual character carried by the hand lever '27 cooperates to maintain said hand lever in adjusted position. A link 32 connects the hand lever 2'7 withuthe double lever '23 so that the adju'stmentof' thehand lever adj'u'sts'the latter which, through the connections heretofore described, swings the construction comprising the ground wheels 10 and disks 18 about the pivotal points 17 to adjust the depth of penetration of the disks. It will be understood that the'respec'tive rack plates upon the opposite sidesof the machine are inclined upwardly toward each other, and the hand l'ev'ers which extend substantially parallel thereto are likewise inclined to bring them within easy reach of v cultivator units,

ject of the doubleleve'r'23 it may be stated the operator upon'the seat intermediate the Before leaving the subthat the equalizer bar 33 is attached thereto by a stirrup"34, the ends of which embrace the central portionof the bent rod 25 betweenthe legs of said lever 23. ,U'pe the rear ends of the straps 9 are pivotally mounted bearing brackets 35 in which is journaled asquare shaft 36, the ends of which extend beyond said brackets and receive collars 37, which are clamped thereto by bolts 38, -(See Fig. 3,) Said bolts also serve as pivots for beams 39 which carry the shovels 40, the latter being con nected to said respective beams by shanks 41 adjustably mounted in s1eeves42 securedto the rear ends of said beams. The beams are secured in adjusted lateral position by means of bolts 43 passing through arcuate slots 44:, formed in the rearwardly extending plates l5 of the collars 37.- -Inorderto adjust the penetration of the shovels 'co'nveniently,the s'haft36 has an arm46 attached thereto and is adjusted by means of a hand lever 47 mounted withinneasy reach of the eperator on his seat. A ra-ck plate 49 is bolted-upon the lower end of hand lever 27,

being secured thereto above and below the bridge 27* by bolts, (see Figs. 1 and 8) a hand lever 47 is pivoted upon the samebolt- 48 upon which hand lever 471s pivoted, and carries a pawl 47* of usual design which engages with the rack upon plate 49. Lever 47 i'sconnected bylink 50 with the arm 46 described above, said link extending through sleeve 51, pivoted to said arm and carrying a collar 52 against which the sleeve is normally pressed by a spring 53 engaging .the collar 54 on said link; By means of the construction just described the shovels may be adjusted with the disks and. ground wheels by means of the hand lever 27, or independently thereof by means of the handle v i, From the above description it is apparent that each cultivator element is complete and symmetrical in itself comprising supporting wheels, ground-.workmg devices and ahitch and a pole. The two cultivator units are connected togetherby a transverse beam B- which is so secured to the respective cultivator units that while tending to maintain a certain average distance between them and to prevent either of them being" tilted with reference to the other, yet permits a limited lateral movement of the units toward and away from each other and when occasion arises a tilting movement of eitherrunit relative to the other witheut injuring or straining the structure. V

The connection between the two cultivator units consists of a beam B which carries a seat 'C and is so connected'to the respecturned and journaled in sockets 61, 61, secured respectively tothe straps 9, 9, on opposite sides of the rear end of the pole by bolts 62. The arms 59, 59 are bent upwardly at their rear ends as at 63 (Figs. 3 and 5) and short of said ends are connected together by a link of angle iron 64, which is pivoted to said arms at 65, 65. Upon the middle of angle iron 64 is pivotally mounted a yoke 66 of iron strap bent upward at its ends 67, 67, and bolted at 68 tothe members 55 of the cross beam. The yoke 66 is pivoted to the angle iron 64 upon a bolt 69, which extends loosely in an enlarged hole 70 in the yoke, and is provided upon its upper and lower end with a nut 69 and a head 69 respectively, a spring 71 and washer 7 2 being interposed between the nut and the intermediate portion of the yoke.

It will be apparent by the connections just described that I have provided for a limited movement of the cultivator units toward and from each other in a horizontal plane and also for a tilting of each unit relative to the beam so that in case the units are displaced laterally or relatively tilted by reason of the character or contour of the ground overwhich they are passing, the machine is not buckled, bent or broken, but yields for the time being and returns to normal shape and position after the inequality of the ground has been passed. The seat G is secured to the beam at the middle thereof, the details of the attaching means being best shown in Fig. 4. A loop 73 bf iron strap supports the seat C, the ends of the strap being brought together and bolted at 79. The strap is secured to the beam by means of a U-shaped yoke 76 embracing the members 55, 55, of the beam, and engaging the loop at its ends which are notched for this purpose. (See Fig. 4.) A pair of bolts 74, 74 maintains the yoke in position. A

foot rest 80 consisting of a cross-piece of bent iron strap is secured between the ends of the loop 73 by' the bolt 79 referred to above. A screw bolt 77 is secured by nuts 81 to the yoke 7 5., and braced by rods 78 extending from the upper end thereof to the above-mentioned sleeves 57 and a-br-ace 84 connects the end of said screw bolt to the end of the loop where said brace is also secured by bolt 79. In order that the seat may be maintained in a substantially central position an equalizing lever 82 is pivoted upon bolt 77 below said brace and connected at its respective ends by links 85 and 86 to eyes 87, 88 respectively, secured to the straps 9 of the cultivator units.

I claim:

1. In a device of the class described, a

pair of cultivator units, an arm mounted to swing in a horizontal plane on each unit, a cross beam extending between the units, a vertical pivot between each end of the cross beam, and the corresponding arm on the cultivator unit, and a spring yieldingly holding the cross beam from tilting relatively to said pivot.

2. In a device of the class described, a pair of cultivator units, a pair of swinging arms pivoted on each unit, a cross bar pivoted to said arms near their free ends, a cross beam pivoted near its opposite ends to the respective cross bars, and a spring connection tending to maintain the normal pivotal relation between each end of said cross beam and its respective cross bar, whereby a tilting movement of the unit relative to the cross beam is permitted.

8. In a device of the class described, a pair of cultivator units, a cross beam ex tending between the units, a bolt connected to the cross beam at one end thereof and to the corresponding cultivator unit and a spring surrounding the bolt and tending to maintain the cross beam and unit in normal relation.

4. In a device of the class described, a pair of cultivator units, a cross beam for connecting them together, a plate connected to the cross beam, a cross bar upon which said plate rests attached to one of the units, a bolt extending through said plate and cross bar and a spring compressed between an abutment on said bolt and said plate and tending to maintain said Plate and cross bar in normal position.

5. In a device ofthe class described, a pair of cultivator units, a cross beam for connecting said units, a bar mounted for lateral movement relative to one of said units, a plate connected to the cross beam and resting upon said bar, a bolt forming a pivotal connection between said plate and bar and a spring compressed between an abutment on said bolt and said plate and tending to maintain the normal relation between said plate and bar.

6. In a device of the class described, a pair of cultivator units, a cross bar connecting said units, a swinging support mounted on each unit, a bar carried by said support, a plate carried by the beam at each end thereof and resting upon the corresponding cross bar, a bolt extending through said plate and cross bar and a spring compressed between an abutment on said bolt and said plate and tending to maintain the normal relation between said plate and bar.

CLEMENT W. MICHAEL.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

